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| ; RUN: opt < %s -disable-basicaa -cfl-steens-aa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s
; When merging MustAlias and PartialAlias, merge to PartialAlias
; instead of MayAlias.
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
; FIXME: This could be PartialAlias but CFLSteensAA can't currently prove it
; CHECK: MayAlias: i16* %bigbase0, i8* %phi
define i8 @test0(i1 %x) {
entry:
%base = alloca i8, align 4
%baseplusone = getelementptr i8, i8* %base, i64 1
br i1 %x, label %red, label %green
red:
br label %green
green:
%phi = phi i8* [ %baseplusone, %red ], [ %base, %entry ]
store i8 0, i8* %phi
%bigbase0 = bitcast i8* %base to i16*
store i16 -1, i16* %bigbase0
%loaded = load i8, i8* %phi
ret i8 %loaded
}
; FIXME: This could be PartialAlias but CFLSteensAA can't currently prove it
; CHECK: MayAlias: i16* %bigbase1, i8* %sel
define i8 @test1(i1 %x) {
entry:
%base = alloca i8, align 4
%baseplusone = getelementptr i8, i8* %base, i64 1
%sel = select i1 %x, i8* %baseplusone, i8* %base
store i8 0, i8* %sel
%bigbase1 = bitcast i8* %base to i16*
store i16 -1, i16* %bigbase1
%loaded = load i8, i8* %sel
ret i8 %loaded
}
; Incoming pointer arguments should not be PartialAlias because we do not know their initial state
; even if they are nocapture
; CHECK: MayAlias: double* %A, double* %Index
define void @testr2(double* nocapture readonly %A, double* nocapture readonly %Index) {
%arrayidx22 = getelementptr inbounds double, double* %Index, i64 2
%1 = load double, double* %arrayidx22
%arrayidx25 = getelementptr inbounds double, double* %A, i64 2
%2 = load double, double* %arrayidx25
%3 = fneg double %1
%mul26 = fmul double %3, %2
ret void
}
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